Malachi 3:6 “For I am the LORD, I change not; therefore ye sons of Jacob are not consumed.”
Because God is love and wants people to trust Him, He has provided thousands of promises in the Bible. Of course, the promises are for His children – those who are born again by faith in Jesus Christ and what He did on the Cross for sinners.
In order to believe that someone is faithful to their Word, there usually needs to be a track record of faithfulness to what they say. God declares that people can determine His faithfulness by considering how faithful He made the heavens: “For I have said, Mercy shall be built up for ever: thy faithfulness shalt thou establish in the very heavens” (Ps. 89:2).
Every day, you can expect the sun to rise and set (unless you live near the poles). The moon will do the same. When the skies are clear at night, you can expect the stars will still be there – and in the same patterns as they were the day before. God has created a faithful and predictable universe. The heavens do not change. You can also expect four seasons each year – with some variation.
When considering the creation and the heavens, the writer of this chapter in Psalms asks: “O LORD God of hosts, who is a strong LORD like unto thee? or to thy faithfulness round about thee?” (Ps. 89:8). Of course, the answer is that there is none as faithful as He is – all the time! David also testified of His faithfulness when he said, in Ps. 37:25: “I have been young, and now am old; yet have I not seen the righteous forsaken, nor his seed begging bread.”
Whether you need to trust Him for salvation, for deliverance from sin, forgiveness of sin (I John 1:9), or answers to prayer – He can be trusted. Sometimes, however, there are conditions. One of them is that you need to be His child and another is that you need to be obedient. Remember, too, that you need to give God the glory when He does answer, and that sometimes He may override your request – give Him praise anyway since He always knows what is best – He is faithful!