Ask the Lord to create in you a pure heart and to renew a steadfast spirit in you (Ps. 51:10). If no one can say ‘Jesus is Lord’ except by the Holy Spirit (1 Cor. 12:3), how can you bring praise when you do not have the right spirit, renewed in your heart? Ask the Lord to help you to purify your heart. Guard your heart against strife and bitterness. Forgive and do not judge.
We have to make sure temptations, anger, greed and worldly desires do not contaminate our hearts and thoughts. For us alone this is impossibly to do. This is why our Heavenly Father sent his Son to be our Savior. This is why God has poured His Holy Spirit on His children to be our help if we willingly and joyfully open our hearts and will for His work.
Heavenly Father, I open my heart for you. I love You and I love my neighbor. Create in my a pure heart and renew a steadfast spirit in me. Have mercy on me according to your unending love.