Jesus first laid down a principle (v. 1). Then He justified this principle theologically (v. 2). Finally He provided an illustration (vv. 3-5).
7:1 Jesus taught His disciples not to be judgmental or censorious of one another in view of the high standards He was clarifying (cf. Rom. 14:10-13; James 4:11-12). He did not mean that they should accept everything and everyone uncritically (cf. vv. 6, 15-20; John 7:24; 1 Cor. 5:5; Gal. 1:8-9; Phil. 3:2; 1 John 4:1). Neither did he mean, obviously, that parents, church leaders, and civil authorities are wrong if they pass judgment on those under their care. He meant that His disciples should not do God's job of passing judgment for Him when He has not authorized them to do so. They really could not since no one but God knows all the facts that motivate people to do as they do. The disciple who usurps God's place will have to answer to Him for doing so.
7:2 The thought here is similar to that in 6:14-15. The person who judges others very critically will experience a similarly rigorous examination from God (cf. 18:23-35). There is a word play in the verse in the Greek text that suggests Jesus may have been quoting a popular proverb.343
7:3-5 The "speck"(Gr. karphos) could be a speck of any foreign matter. The "log"or "plank"(Gr. dokos) refers to a large piece of wood. Jesus again used hyperbole to stress the folly of criticizing someone else. This act reveals a much greater problem in the critic's life, namely a censorious spirit.
Such a person is a hypocrite in the sense that his actions carry him away. He does not deceive others as much as he deceives himself. Other people may realize that his criticism is unjustifiable, but he does not. A proper attitude is important in judging oneself and other people (1 Cor. 11:31; Gal. 6:1). Censorious critics are not helpful. That is what Jesus warned against here (cf. Luke 6:39-42).
"The disciples of the King are to be critical of self but not of their brethren. The group is to be noted for their bond of unity, which is indicated by a lack of criticism. This is fitting, since the kingdom is characterized by peace. (Isaiah 9:7)."344