Ecclesiastes 3:8

“A time to love, and a time to hate, etc.] For one to love his friend, and to hate a man, a sinner, as the Targum; to love a friend while he continues such, and hate him, or less love him, when he proves treacherous and unfaithful; an instance of a change of love into hatred may be seen in the case of Amnon, (<101315>2 Samuel 13:15). A time of unregeneracy is a time of loving worldly lusts and sinful pleasures, the company of wicked men, and all carnal delights and recreations; and a time of conversion is a time to hate what was before loved, sin, and the conversion of sinners, the garment spotted with the flesh, the principles and practices, though not the persons, of ungodly men; and even…”

“hate--for example, sin, lusts (Luk 14:26); that is, to love God so much more as to seem in comparison to hate "father or mother," when coming between us and God. a time of war . . . peace-- (Luk 14:31).”

“To love - When God stirs up love, or gives occasion for the exercise of it. Ecclesiastes 3:9”

“time to love: Eze 16:8; Psa 139:21; Eph 3:19, Eph 5:25, Eph 5:28, Eph 5:29; Tit 2:4 a time to hate: Ch2 19:2; Luk 14:26; Rev 2:2 a time of war: Gen 14:14-17; Josh. 8:1-29, Jos 11:23; Sa2 10:6-19; Kg1 5:4; 2Chr. 20:1-29, Ch2 20:30 Ecclesiastes 3:9”

“"To love has its time, and to hate has its time; war has its time, and peace has its time." In the two pairs of contrasts here, the contents of the first are, not exclusively indeed ( Psa 120:7), but yet chiefly referred to the mutual relations of peoples. It is the result of thoughtful intention that the quodlibet of 2 x 7 pairs terminates this for and against in "peace;" and, besides, the author has made the termination emphatic by this, that here "instead of infinitives, he introduces proper nouns" (Hitz.). Ecclesiastes 3:9”