Ephesians 2:10 For we are His workmanship, created in Christ Jesus for good works, which God prepared beforehand that we should walk in them.
All of us who received the promise of the Gospel have been recreated in Christ Jesus to do the good works that God prepared for us in advance. When the disciples asked Jesus concerning the work of God that they need to do, Jesus answered them in John 6: 28-29 Then they said to Him, “What shall we do, that we may work the works of God?” Jesus answered and said to them, “This is the work of God, that you believe in Him whom He sent.”
So if we want to do the work of God we need to understand what is the meaning of “believe”. From a Hebrew perspective believe is “to heed to the Gospel” or “to impose to the Gospel”. In effect it means to be faithful to the Gospel as we obey and walk in faith what we received, so that we can be called faithful and trustworthy.
To explain it better, lets consider the story of Elijah and Elisha. Based on their example in being called there are three phases you go through.
Elisha was a farmer, called by God, his first test was to acknowledge the call and to react accordingly. We some times acknowledge the call but the way we react is not always to the benefit of the call.
1 Kings 19:19-20 So he departed from there, and found Elisha the son of Shaphat, who was plowing with twelve yoke of oxen before him, and he was with the twelfth. Then Elijah passed by him and threw his mantle on him. And he left the oxen and ran after Elijah, and said, “Please let me kiss my father and my mother, and then I will follow you.” And he said to him, “Go back again, for what have I done to you?”
Second phase, is the tempter who tempt you in giving up on the calling you received. The tempter can use people to discourage you.
2 Kings 2:1-6 And it came to pass, when the Lord was about to take up Elijah into heaven by a whirlwind, that Elijah went with Elisha from Gilgal. Then Elijah said to Elisha, “Stay here, please, for the Lord has sent me on to Bethel.” But Elisha said, “As the Lord lives, and as your soul lives, I will not leave you!” So they went down to Bethel. Now the sons of the prophets who were at Bethel came out to Elisha, and said to him, “Do you know that the Lord will take away your master from over you today?” And he said, “Yes, I know; keep silent!” Then Elijah said to him, “Elisha, stay here, please, for the Lord has sent me on to Jericho.” But he said, “As the Lord lives, and as your soul lives, I will not leave you!” So they came to Jericho. Now the sons of the prophets who were at Jericho came to Elisha and said to him, “Do you know that the Lord will take away your master from over you today?” So he answered, “Yes, I know; keep silent!” Then Elijah said to him, “Stay here, please, for the Lord has sent me on to the Jordan.”
The third phase is a test of faith in the Hebrew sense. To heed to the gospel, to acknowledge what you received.
2 Kings 2:10-14 So he said, “You have asked a hard thing. Nevertheless, if you see me when I am taken from you, it shall be so for you; but if not, it shall not be so.” Then it happened, as they continued on and talked, that suddenly a chariot of fire appeared with horses of fire, and separated the two of them; and Elijah went up by a whirlwind into heaven. And Elisha saw it, and he cried out, “My father, my father, the chariot of Israel and its horsemen!” So he saw him no more. And he took hold of his own clothes and tore them into two pieces. He also took up the mantle of Elijah that had fallen from him, and went back and stood by the bank of the Jordan. Then he took the mantle of Elijah that had fallen from him, and struck the water, and said, “Where is the Lord God of Elijah?” And when he also had struck the water, it was divided this way and that; and Elisha crossed over.
No lets consider again what Jesus said to us His disciples.
When the disciples asked Jesus what is the work of God, Jesus in effect said that they need to consider the Gospel and do accordingly. All of us have been called for Jesus said in Mat 28:19 “go”, this is a direct command we received from the Lord, that is to go and proclaim the Gospel into the world.
Like Elisha we must know how to react when we are called, this is our test of faith, do not allow discouragement as you keep your eyes on Jesus and His ability to do what He promised. We all fall short, but praise God, that He is always willing to help us to recommit ourselves, like Peter.
Jesus promised that we will receive power from above to be a witness unto Him. Like Elisha all of us is confronted as to whether we received the ability to be a witness. Elisha received the mantle in faith based on what was promised, and had to put his faith into practice when he returned to the Jordan. Peter who witnessed that he and the other disciples received the Holy Spirit preached in the power he received and 3000 was converted. He then again spoke in faith to the cripple and 5000 got converted.