1 Corinthians 4:17 (KJV 1900)
17 For this cause have I sent unto you Timotheus, who is my beloved son, and faithful in the Lord, who shall bring you into remembrance of my ways which be in Christ, as I teach every where in every church.
For this cause. What cause does Paul mean? Because the Corinthians forgot the doctrine, Paul, their father in the faith, had taught them. They needed reminding so they could follow Paul.
Have I sent unto you Timotheus; Timotheus: Τιμόθεος /tee·moth·eh·os/, meaning God-honoring, is the Greek form of the name Timothy). Paul depended on and trusted his beloved son, and faithful in the Lord. Paul mentions Timothy in 11 of his 13 letters. Only in Galatians and Ephesians is he not referred to, although he became the pastor of the church in Ephesians.
Bring you into remembrance of my ways which be in Christ; Correct doctrine is the key to a healthy church. The letters of Paul are essential because they contain the doctrine for the church. It is only through Pauline doctrine that we can know how to live the Christian life in the dispensation of grace.
As I teach everywhere in every church; Paul’s doctrine never wavered. He learned it from Jesus Christ directly (Galatians 1:16). Timothy had been with Paul, so often he was somewhat of an expert on his doctrine since he heard Paul teach it everywhere.