The way Jesus puts the question to Philip expects a positive answer. This was something that even the Jews should have been able to see and know (10:38). Jesus should have been able to expect greater faith from His disciples than from the blind man (9:35-38) or from Martha (11:27), and much more than from His enemies! His words to the disciples when He said (14:1) were obviously needed.

John 10:38  But if I do it, even though you do not believe me, believe the miracles, that you may know and understand that the Father is in me, and I in the Father.”

John 9:35-38  Jesus heard that they had thrown him out, and when he found him, he said, “Do you believe in the Son of Man?”  “Who is he, sir?” the man asked. “Tell me so that I may believe in him.”  Jesus said, “You have now seen him; in fact, he is the one speaking with you.”  Then the man said, “Lord, I believe,” and he worshipped him.

John 11:27  “Yes, Lord,” she told him, “I believe that you are the Christ, the Son of God, who was to come into the world.”

John 14:1  “Do not let your hearts be troubled. Trust in God; trust also in me.

In this verse and the one following Jesus gives three reasons for believing that the Father is in Him and He is in the Father. The first of these is here and it is that the words He has spoken are not His, but have come straight from the Father (3:34; 7:17). They are a revelation of God and should have been perceived as such. The teaching of Jesus reveals the heart of God even today. If you want to know what God thinks, listen to what Jesus says.

John 3:34  For the one whom God has sent speaks the words of God, for God gives the Spirit without limit.

John 7:17  If anyone chooses to do God’s will, he will find out whether my teaching comes from God or whether I speak on my own.

“his work” = notice that the things that they witnessed Jesus say and do are said by Jesus to have been done by the Father and to actually be His work.

How does this apply to the things we do for and through God?