Beware, brethren, lest there be in any of you an evil heart of unbelief in departing from the living God; 13 but exhort one another daily, while it is called “Today,” lest any of you be hardened through the deceitfulness of sin. 14 For we have become partakers of Christ if we hold the beginning of our confidence steadfast to the end . . . (Heb 3:12-14)
This passage of Scripture above, says that we can become hardened by the deceitfulness [false-heartedness; faithlessness] of sin. I believe that is referring to developing a hard heart.
The last portion of the passage in Hebrews (above) says that we have become “partakers of Christ.” What does that phrase signify? It means that we are members of the body of Christ, and as such, we are His accomplices or assistants. Remember that Paul tells us that we are “workers together with God” in 2 Corinthians 6:1.
Then the magicians of Egypt did so with their enchantments; and Pharaoh’s heart grew hard, and he did not heed them, as the Lord had said. 23 And Pharaoh turned and went into his house. Neither was his heart moved by this. (Ex 7:22-23, underscoring added)
Hardness of hard refers to a heart that cannot be moved, stimulated, or motivated to a different path or a better way of responding. It’s what happened to Pharaoh. We must guard our own hearts carefully against the formation of such a tendency in ourselves.
When we walk in the light with Jesus, we have fellowship with each other, and the blood of Jesus continually cleanses us from sin. (1 Joh 1:7) So be mindful of staying in the light of God’s truth by reading the Word, obeying the Word, praying, and having fellowship with other believers.
Let nothing be done through selfish ambition or conceit, but in lowliness of mind let each esteem others better than himself. 4 Let each of you look out not only for his own interests, but also for the interests of others. (Phil 2:3-4) Following this admonition will also keep us tender-hearted and humble before the Lord.
Do not be overcome by evil, but overcome evil with good. (Rom 12:21) We’re indwelt by the Overcomer—the Victorious One—so that we are empowered to actually overcome evil with good! Glory to God!
God’s good plans for each one of us are that we be blessed and that each of us bring blessings to many others. (Jer 29:11)