Hebrews 10:29 English Standard Version (ESV) How much worse punishment, do you think, will be deserved by the one who has trampled underfoot the Son of God, and has profaned the blood of the covenant by which he was sanctified, and has outraged the Spirit of grace?
A disobedient servant is one that cannot be trusted. The first response to continued willful sin is a breakdown in relationship which we caused. Saved or not sin still has consequences which we cannot escape. We can be assured of eternal salvation because we placed out faith in Christ but that does not mean that we can be unfaithful and escape any consequences for our willful sin.
2 Corinthians 5:10 English Standard Version (ESV) For we must all appear before the judgment seat of Christ, so that each one may receive what is due for what he has done in the body, whether good or evil.
Make no mistake here, this judgment falls upon those who are saved from going to hell for they are part of the bride of Christ, the true church.
Ezekiel 16:63 English Standard Version (ESV) that you may remember and be confounded, and never open your mouth again because of your shame, when I atone for you for all that you have done, declares the Lord God.”
An unfaithful servant will no longer be allowed to speak for God. His witness is tainted with sin.
God is consistent in His response to sin. Yes He is faithful to forgive a repentant sinner who confesses his sins from the heart. God owes nothing to the sinner who only confesses in his mind to escape the consequences of his actions.
Hebrews 6:5-6 English Standard Version
5 and have tasted the goodness of the word of God and the powers of the age to come, 6 and then have fallen away, to restore them again to repentance, since they are crucifying once again the Son of God to their own harm and holding him up to contempt.
Continual willful sin has dire consequences.