Joh 15:20 "Remember the word that I said to you, ‘A servant is not greater than his master.’ If they
persecuted Me, they will also persecute you. If they kept My word, they will keep yours also.
When we became born again we came into a new kingdom (Col. 1:13). The old is passed away; behold all things are new (II Cor. 5:17). This also means that we no longer belong to ourselves but we have been bought with the blood of Christ--we belong to God (I Cor. 6:20). What we say, do, and live to in Christ means that we are not alone or on our own. We've been sent; we've been inspired and led.
When we witness, share, pray for, preach, teach, and promote the love of God it is not our own. We are drawing from the grace of God to work the works of Christ (John 14:12). We've been blessed with the infusion of the divine nature that is empowering us to believe, to act and think in the realm of faith (II Pet. 1:4). We are walking in His steps (with Him); abiding in His Spirit (John 15:5). All of this is to say that when we witness for Him it is the Lord's work through us. When we preach, teach, and share, it is the Lord's work in us.
Eph 2:10 For we are His workmanship, created in Christ Jesus for good works, which God prepared
beforehand that we should walk in them.