Charles H. Spurgeon on Psalms 130:5

I wait for the LORD, etc. We pronounce this a most blessed posture of the believer. It runs counter to everything that is natural, and, therefore, it is all the more a supernatural grace of the gracious soul. In the first place it is the posture of faith. Here is the gracious soul hanging in faith upon God in Christ Jesus; upon the veracity of God to fulfil his promise, upon the power of God to help him in difficulty, upon the wisdom of God to counsel him in perplexity, upon the love of God to shield him in danger, upon the omniscience of God to guide him with his eye, and upon the omnipresence of God to cheer him with his presence, at all times and in all places, his sun and shield. Oh, have faith in God.

It is also a prayerful posture. The soul waiting for God, is the soul waiting upon God. The Lord often shuts us up to this waiting for his interposition on our behalf, that he may keep us waiting and watching at the foot of his cross, in earnest, believing, importunate prayer. Oh, it is the waiting for the Lord that keeps the soul waiting upon the Lord!

It is also the posture of a patient waiting for the Lord. There is not a more God honouring grace of the Christian character than patience —a patient waiting on and for the Lord. It is that Christian grace, the fruit of the Spirit, which will enable you to bear with dignity, calmness, and submission the afflictive dealings of your Heavenly Father, the rebuke of the world, and the wounding of the saints.

It is the posture of rest. A soul waiting for the Lord is a soul resting in the Lord. Waiting and resting! Wearied with traversing in vain the wide circle of human expedients; coming to the end of all your own wisdom, strength, and resources; your uneasy, jaded spirit is brought into this resting posture of waiting on, and waiting for, the Lord; and thus folds its drooping wings upon the very bosom of God. Oh, how real and instant is the rest found in Jesus! Reposing in him, however profound the depth of the soul, however dark the clouds that drape it, or surging the waters that overwhelm it, all is sunshine and serenity within. —Condensed from "Soul Depths and Soul Heights", by Octavius Winslow, 1874.