Then, at that time. Tote. Scripture marks moments when everything shifts: then the disciples understood, then the end will come. God works in ordered time. Pay attention to what follows "then."

the front (as being towards view), i.e. the countenance, aspect, appearance, surface; by implication, presence, person

To know, to understand, to perceive. Ginosko. This is eternal life that they may know You. The deepest knowing is relational not informational. God wants to be known.

Part, portion, share. Meros. Every member of the body has its part to play, and every believer receives a portion in Christ. Know your part and fulfill it.

to know upon some mark, i.e. recognize; by implication, to become fully acquainted with, to acknowledge

Just as, in the same way, inasmuch as. Kathōs. God loves, forgives, and gives — and calls us to do likewise. How He acts becomes the pattern for how we act. Live up to the standard.