Many waters cannot quench love, neither can the floods drown it: if a man would give all the substance of his house for love, it would utterly be contemned.

Wesley's Notes

8:7 Many waters - My love to thee cannot be taken off, either by terrors and afflictions, which are commonly signified in scripture by waters and floods; or by temptations and allurements. Therefore, give me thyself, without whom, and in comparison of whom, I despise all other persons and things.

Jamieson-Fausset-Brown Bible Commentary

7. waters-in contrast with the "coals of fire" (So 8:6; 1Ki 18:33-38). Persecutions (Ac 8:1) cannot quench love (Heb 10:34; Re 12:15, 16). Our many provocations have not quenched His love (Ro 8:33-39).

if . give all the substance . contemned-Nothing short of Jesus Christ Himself, not even heaven without Him, can satisfy the saint (Php 3:8). Satan offers the world, as to Jesus Christ (Mt 4:8), so to the saint, in vain (1Jo 2:15-17; 5:4). Nothing but our love in turn can satisfy Him (1Co 13:1-3).

Matthew Henry's Concise Commentary

8:5-7 The Jewish church came up from the wilderness, supported by Divine power and favour. The Christian church was raised from a low, desolate condition, by the grace of Christ relied on. Believers, by the power of grace, are brought up from the wilderness. A sinful state is a wilderness in which there is no true comfort; it is a wandering, wanting state: There is no coming out of this wilderness, but leaning on Christ as our Beloved, by faith; not leaning to our own understanding, nor trusting in any righteousness of our own; but in the strength of him, who is the Lord our Righteousness. The words of the church to Christ which follow, entreat an abiding place in his love, and protection by his power. Set me as a seal upon thine heart; let me always have a place in thine heart; let me have an impression of love upon thine heart. Of this the soul would be assured, and without a sense thereof no rest is to be found. Those who truly love Christ, are jealous of every thing that would draw them from him; especially of themselves, lest they should do any thing to provoke him to withdraw from them. If we love Christ, the fear of coming short of his love, or the temptations to forsake him, will be most painful to us. No waters can quench Christ's love to us, nor any floods drown it. Let nothing abate our love to him. Nor will life, and all its comforts, entice a believer from loving Christ. Love of Christ, will enable us to repel and triumph over temptations from the smiles of the world, as well as from its frowns.