“You can do as I have done” – Or something like that. Jesus said this but I don't know where in the Bible it’s located or if it’s even said in these words. No particular reason other than I was oddly inspired when I read it once long ago.
I'm sure your reference is to this statement of Jesus at John 14:12: "Truly, truly, I say to you, he who believes in me will also do the works that I do; and greater works than these will he do, because I go to the Father. Whatever you ask in my name, I will do it, that the Father may be glorified in the Son."
This is a key passage in which Unity's understanding of Jesus' message differs from that of more traditional Christian belief. This is from his great final discourse, following the Last Supper, on the eve of his crucifixion. He is intently focused on planting seeds of spiritual truth in his disciples that will grow and bear fruit once he is physically absent.
He is speaking here fully as Jesus Christ – speaking as the Christ Presence of God that is the truth of his spiritual identity – and the truth of ours. If we believe in the Christ – as it expressed through Jesus and as it exists within us – then we will express our own creative power as fully as Jesus expressed his. Indeed, it will be easier for us to accomplish great demonstrations of spiritual truth because Jesus did it first, to show us the way. He went "to the Father" – back to spiritual Source. Whatever we ask of the Christ will be achieved and accomplished, according to absolute spiritual law, so that the fullness of God as Source can express through us – through God as the Christ – and become the new consciousness that Jesus calls “the kingdom of heaven.”
I, too, was oddly inspired by this passage when I first heard it in my earliest days in Unity. And I'm equally as inspired each time I revisit it.