Reference

John 1:35-51

Right at the beginning of His ministry, Jesus calls 12 men to be His disciples for his whole 3 year ministry. When He calls them, He tells them to "come and see" what He WILL DO (future) to rescue from sin and bring people to God as beloved children. He invites us, when we read these words to come and see what HE HAS DONE (completed!), trust in Him, and be utterly saved from sin, and brought to God as beloved children.