Satan will try to discourage us, especially when we sin. But we have an advocate in Jesus Christ. Key verses of this message include
Ephesians 6:10-11: (10) Finally, my brethren, be strong in the Lord, and in the power of his might. (11) Put on the whole armour of God, that ye may be able to stand against the wiles of the devil.
1 John 2:1-2: (1) My little children, these things write I unto you, that ye sin not. And if any man sin, we have an advocate with the Father, Jesus Christ the righteous: (2) And he is the propitiation for our sins: and not for ours only, but also for [the sins of] the whole world.