Vincent's NT Word Studies
2. Hereby (en toutw). See on ii. 3.Know ye (ginwskete). Perceive. See on John ii. 24.
Confesseth (omologei). See on Matt. vii. 23; x. 32.
That Jesus Christ is come in the flesh (Ihsoun Criston en sarki elhluqota). Lit., Jesus Christ having come, etc. The whole phrase forms the direct object of the verb confesseth.
Of God. Compare 1 Cor. xii. 3.