Mathew 28 19. There is your three in a single verse and a pretty important one as well.
He said it this way because of the three items that were placed in the ark of the covenant.
1. The staff of Aaron, 2. The Ten Commandments, 3. The jar of manna.
1. The way. 2. The truth 3.The Life.
The curtain between the holy and the most holy was ripped in two at Jesus' death.
No one comes to the father except through Jesus.