He that saith he abideth in him ought himself also so to walk, even as he walked.
Abideth - a condition lasting, without intermission and end.
He that saith ... ought. So that his deeds may be consistent with his words.
Even as he. Believers readily supply the name, their hearts being full of Him (cf. John 20:15). "Even as He walked" when on earth, especially as to love. John delights in referring to Christ as the model man: "even as He," etc. 'It is not Christ's walking on the sea, but His ordinary walk, we are called on to imitate' (Luther).