JMNT(i)
14 "So he said to me, 'The God of our fathers (or: ancestors) took you in hand beforehand (or: handled you in advance; or: hand-picked you ahead of time) to know His will and to gain insight about the effect of His intent, and the result of His design and purpose, by intimate experience, and then to see the Fair and Equitable One (the One who is Rightwised, Just, in right relationships, and who embodies the Way pointed out), and to hear [the] voice forth from His mouth,
15 "'because (or: that) you will be a witness for (or: to; with; by) Him to all mankind (or: you will be evidence about Him with a view toward all humanity) of what (or: concerning which things) you have seen and heard (or: and now hear).
16 "'And so now, what are you presently waiting for (or: why do you continue delaying)? Upon rising (standing up), at once immerse yourself (dip yourself) and you yourself wash away your mistakes (your failures to hit the target; your errors; your sins), after having called upon His Name!'