'Perform' in the Bible

Again, ye have heard that it was said to them of old time, Thou shalt not forswear thyself, but shalt perform unto the Lord thine oaths:

And he said unto them, Go and say to that fox, Behold, I cast out demons and perform cures to-day and to-morrow, and the third day I am perfected.

and being fully assured that what he had promised, he was able also to perform.