(i) Feet

(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.