Seeking God is never a vain pursuit. He told Israel, "You will seek Me and find Me when you search for Me with all your heart" (Jeremiah 29:13). Regarding our needs, food, drink, clothing, Jesus said, "But seek first His kingdom and His righteousness, and all these things will be added to you" (Matthew 6:33). God will not turn away those who seek Him wholeheartedly. If we truly seek Him, we will find Him, and He will change our hearts and meet our needs.
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Spurgeon's Morning and Evening Devotions

Evening, August 21

"I said not unto the seed of Jacob, Seek ye Me in vain." Isaiah 45:19

We may gain much solace by considering what God has not said. What He has said is inexpressibly full of comfort and delight; what He has not said is scarcely less rich in consolation. It was one of these "said nots" which preserved the kingdom of Israel in the days of Jeroboam the son of Joash, for "the Lord said not that He would blot out the name of Israel from under heaven." 2 Kings 14:27. In our text we have an assurance that God will answer prayer, because He hath "not said unto the seed of Israel, Seek ye Me in vain." You who write bitter things against yourselves should remember that, let your doubts and fears say what they will, if God has not cut you off from mercy, there is no room for despair: even the voice of conscience is of little weight if it be not seconded by the voice of God. What God has said, tremble at! But suffer not your vain imaginings to overwhelm you with despondency and sinful despair. Many timid persons have been vexed by the suspicion that there may be something in God's decree which shuts them out from hope, but here is a complete refutation to that troublesome fear, for no true seeker can be decreed to wrath. "I have not spoken in secret, in a dark place of the earth; I have not said," even in the secret of my unsearchable decree, "Seek ye Me in vain." God has clearly revealed that He will hear the prayer of those who call upon Him, and that declaration cannot be contravened. He has so firmly, so truthfully, so righteously spoken, that there can be no room for doubt. He does not reveal His mind in unintelligible words, but He speaks plainly and positively, "Ask, and ye shall receive." Believe, O trembler, this sure truth- that prayer must and shall be heard, and that never, even in the secrets of eternity, has the Lord said unto any living soul, "Seek ye Me in vain."

Joseph: A Reflection of Christ
Genesis 37:9-11
https://ko-fi.com/post/Joseph-A-Reflection-of-Christ-Y8Y81K2Z5O?fromEditor=true