Hebrews 3

Heb 3:12 Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God....  


we see here that we are being warned of an "evil heart" of unbelief . We find out in vs. 13 "lest any of you be hardened through the deceitfulness of sin. "  that sin will deceive you and harden our heart. So after your heart is hardened because of sin it makes your heart less sensitive to the communication that God is giving, Which you need faith to accept in the first place . So the overall conclusion is that being in, or partaking of sin brings us to a place that the faith we do have is strained of its power. Because of sin, un-confessed sin more precisely, your faith will not be enough. But that sin needs to be confessed and dealt with . then having a "clean heart" your faith is free to exercise itself. 


If you ever find yourself needing to be able to step out in your faith, but something is holding you back. do not be deceived it could be un-confessed sin. there are many things that lead us to not confessing our sins. such as  that we do not realize that it is sin, or it takes a higher place than Christ in our lives. this is where God is communicating with us and we can not hear him and the voices of the people He sends into our lives to help make us aware.

Let us as Christians be vigilant to always seek the lowly place of being humble with our faith. We wouldn't want our faith to be in our own ideas and not be able to lead us to repentance and deceive us about important matters.