Matthew 18:7

Jesus pronounced woe on the world because it is the source of opposition to Him and His disciples, the source of all stumbling. The NIV translation may be a little misleading here. "Woe" announces judgment (cf. Matthew 11:21; Matthew 23:13-32). It is inevitable that the world will reject Jesus’ disciples, but God will hold those who do reject them responsible (cf. Isaiah 10:5-12; Acts 4:27-28).