(ii) Two hebrew words used...
(1) Regel (7272)- to walk, a step, a journey.
(2) Paama (6471) - a stroke (on anvil), to beat regularly, to move.
to move , walk forward.
(iii) Christian walk - taking the Gospel.
(iv) (1) (a) 5:3
(b) Eph 2:10; Rom 10:15
(2) (a) 7:1
(b) as above.