The way we may be sure that we know Jesus is to keep his commandments. This is the way we may know that we are in union with him: whoever claims to abide in him ought to walk just as he walked. (1 Jn 2:3-11)
https://bible.usccb.org/bible/readings/122922.cfm
To walk as he walked . . . a key to understanding discipleship. It is Jesus himself who calls us: Come, follow me. Saint Thomas Becket (1119-1170) joyfully gave his life following the Lord.