4:1-13 What is Jesus impressing upon Christians here?

Jesus is impressing upon Christians here that they have to repeatedly resist the Devil, but that in order to overcome him they need to be thoroughly grounded in God's word to proclaim it over their circumstances in life (cp Mt 16:23; Eph 6:10-18; Jas 4:7; 1Pe 5:7-8).

See also comments on Eph 6:10-18; Jas 4:7; 1Pe 5:7-8

Luke:-