Preach the Gospel
“irrespective of result”
(because you cannot control the fact that some will reject it while others accept it – that’s not our part, it’s between them & the Blessed Lord thereafter).
We just do “our part” by preaching the Gospel fulfilling “our obedience” in this “Command”.
A Great lesson can be learnt from the “poor widow” who gave only “two mites” but yet is commended by the Blessed Saviour to have “given more than all the others” even though those “two mites” may have had “no result” at all (E.g. Compared against the “rich’s donations” which may have fed many people instead – God judges fairly based on “how much one has given” relative to “how much one has received” with respect to the “heart” or “intent”).