3:16 Habakkuk trembled all over as he awaited the day of Babylon's invasion of Judah, the day of her distress. He could do nothing but wait patiently for the Babylonians to grow stronger and for judgment to come on Israel. It is a terrible feeling to know that calamity is coming but that one can do nothing to prevent it. He could endure the prospect because he remembered that the omnipotent God of Israel had consistently defended her in the past and promised to do so in the future. Earlier when the prophet heard about the powerful Babylonians, he wanted to talk with God (2:1). But now having been reminded of the infinitely more powerful Yahweh, he had nothing more to say (cf. Job 42:1-6). God would handle the Babylonians. All Habakkuk had to do was wait.
3:17-18 Even though everything would get worse in Judah, Habakkuk determined to praise Yahweh and to rejoice in the God who would save him (cf. Ps. 18:46; 25:5). The prophet pictured the worst of circumstances by using a variety of rural metaphors drawn from plant and animal life. Taken together they have the effect of saying that no matter what bad thing may happen, Habakkuk, and hopefully all Israel, would trust God. Even though the prophet felt weak physically, he was strong in faith spiritually. Thus he would live (cf. 2:4). Many of these bad conditions did mark Judah when the Babylonians overthrew the nation (cf. Lam. 2:12, 20; 4:4, 9-10; 5:17-18).
3:19a Sovereign Yahweh, Habakkuk's master, was the source of His strength, even though the prophet's legs shook (v. 16). He enabled his servant to walk through the perilous valley he faced as surefootedly as the hoofs of a gazelle enabled it to navigate precipitous places (cf. Deut. 32:13; 33:29; 2 Sam. 22:34; Ps. 18:32-33, 39).
This statement of strong confidence contrasts with the prophet's doubts and fears out of which he spoke at the beginning of this book (1:2-4). A revelation from God, and Habakkuk's decision to believe what God revealed, turned his attitude around.
"Habakkuk was about to go under' when he started this book. Destruction, violence, strife, conflict, injustice, and wickedness were all he could see. But he cried out to God and his cry did not go unheeded. The Lord not only answered his complaint but also provided the confidence needed to lift him from the quagmire. Habakkuk started in the pits, but ended on the mountaintop. His journey was not exactly an easy one, but it was certainly worth it."34
Essential elements in true prayer that are obvious in Habakkuk's prayer include humiliation, adoration, and petition.35