You can do this.

The Bible gives strong support for setting wise and healthy boundaries, especially in relationships marked by manipulation, conflict, or ongoing harm. Boundaries are not unloving. In many cases, they are an expression of wisdom, truth, and peace.

Four ways to think about it

First, Scripture teaches us to guard our hearts.

Proverbs 4:23 says, “Keep your heart with all vigilance, for from it flow the springs of life.” This means we are responsible before God to protect our inner life, including our thoughts, emotions, and spiritual well-being. Allowing repeated manipulation to shape the heart is not wisdom.

Second, the Bible calls us to speak the truth.

Ephesians 4:25 says, “Therefore, having put away falsehood, let each one of you speak the truth with his neighbor.” Healthy relationships require honesty. Boundaries often begin when a person stops pretending everything is fine and begins speaking clearly, kindly, and truthfully.

Third, Christians are called to pursue peace realistically.

Romans 12:18 says, “If possible, so far as it depends on you, live peaceably with all.” This verse reminds us that peace is our goal, but it is not always fully possible when another person refuses health. We are responsible for our part, not for controlling theirs.

Finally, Scripture warns about the power of harmful influence.

Proverbs 13:20 says, “Whoever walks with the wise becomes wise, but the companion of fools will suffer harm.” At times, wisdom requires distance, limits, and clear boundaries so that sin, dysfunction, or emotional control do not continue unchecked.