How do we know true repentance is essential for salvation?

In the Reformed tradition, true repentance is seen as an essential component of salvation that accompanies faith. The preacher outlines that without repentance, which signifies a change of mind about God, oneself, and salvation, there can be no genuine faith. Therefore, the Scriptures affirm that repentance and faith are two sides of the same coin, as stated in Acts 20:21. This belief reflects that true faith results in repentance, marking a departure from self-reliance and a turn towards reliance on God’s grace.