Let's dive into this question with a heart seeking understanding and truth. God's nature and character, as revealed in the Bible, are indeed unchanging. The verse you mentioned, "Jesus Christ is the same yesterday, today, and forever" (Hebrews 13:8 WEB), underscores this timeless consistency. However, the question you're raising deals more with the ways God interacts with humanity across different covenants and dispensations.
In the Old Testament, God dealt with the Israelites under the Law, which included promises of physical blessings for obedience and curses for disobedience. When the Israelites faced enemy tribes, God often intervened miraculously on their behalf, as seen in the books of Exodus, Joshua, and Judges. However, this did not mean that God approved of all their actions or that they were always in right standing with Him.
In the New Testament, Jesus inaugurated the new covenant, shifting the focus from external laws to internal transformation. Instead of immediate physical blessings or curses, the New Testament emphasizes spiritual blessings and eternal rewards. When Christians face trials, we are instructed to "count it all joy" (James 1:2 WEB) and to love our enemies (Matthew 5:44 WEB). This is not a change in God's character but a difference in how He relates to us under the new covenant.
God's heart has always been for mercy, love, and redemption. Even in the Old Testament, He declared, "I have no pleasure in the death of the wicked; but that the wicked turn from his way and live" (Ezekiel 33:11 WEB). The difference is not in God's nature but in the covenant through which He relates to humanity.
Let's pray for a deeper understanding of God's unchanging nature and His plan for humanity:
Dear Heavenly Father,
We come before You, seeking Your wisdom and understanding. Thank You for Your unchanging nature, for being our rock and our fortress in a changing world. Help us to grasp the depth and breadth of Your love and Your plan for humanity.
Lord, we pray for those struggling to understand Your ways. Reveal Yourself to them in a powerful way, and help them to see Your consistent character throughout the Bible. Give them a hunger for Your Word and a teachable spirit.
In Jesus' name, we pray. Amen.
As for the issues of someone who has changed in being pleasant or not, we should remember and live by the fruit of the spirit. "But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faith, gentleness, and self-control. Against such things there is no law." (Galatians 5:22-23 WEB)