Jeremiah 12 (esp. vss. 2-3):

God can be close to my lips and far from my mouth. This is offensive enough to God (vs. 13) that He would give His children over to enemies (vs. 7). Therefore, Jesus, may I be much more concerned with the praise in my heart than the praise from my mouth, lest I become a shepherd who destroys Your vineyard (vs. 10).