Contradiction with Matthew 6:7
This verse discourages vain repetitions in prayer, which can be interpreted as contradictory to the notion of frequent or constant praising as mentioned in Psalms 63:4.
Matthew 6:7: But when ye pray, use not vain repetitions, as the heathen [do]: for they think that they shall be heard for their much speaking.
Contradiction with Ecclesiastes 5:2
Advises against being rash with your words before God, contrasting with the outward expression of praise found in Psalms 63:4.
Ecclesiastes 5:2: Be not rash with thy mouth, and let not thine heart be hasty to utter [any] thing before God: for God [is] in heaven, and thou upon earth: therefore let thy words be few. [thing: or, word]
Contradiction with Job 21:14-15
Reflects a sentiment of indifference or rejection toward worshiping God, which opposes the desire to bless God as expressed in Psalms 63:4.
Job 21:14-15: Therefore they say unto God, Depart from us; for we desire not the knowledge of thy ways.
Contradiction with Amos 5:21-23
God expresses disdain for the outward displays of worship that are not backed by justice and righteousness, potentially contradicting the idea of expressed praise such as in Psalms 63:4.
Amos 5:21-23: I hate, I despise your feast days, and I will not smell in your solemn assemblies. [in...: or, your holy days]