Hebrews 10:22 (NIV) Let us draw near to God with a sincere heart in full assurance of faith, having our hearts sprinkled to cleanse us from a guilty conscience and having our bodies washed with pure water.
2 Corinthians 1:12 (NIV) Now this is our boast: Our conscience testifies that we have conducted ourselves in the world, and especially in our relations with you, in the holiness and sincerity that are from God.
1 Timothy 1:5 (NIV) The goal of this command is love, which comes from a pure heart and a good conscience and a sincere faith.
1 Peter 1:22 (NIV) Now that you have purified yourselves by obeying the truth so that you have sincere love for your brothers, love one another deeply, from the heart.
"Sincerity is an openness of heart; we find it in very few people." François, Duc de La Rochefoucauld (1613-1680)