Strength to Become Weak

‘But you shall receive power when the Holy Spirit has come upon you; and you shall be witnesses to Me in Jerusalem and in all Judea and Samaria and to the end of the earth.' 

(Acts 1:8)

'For though He was crucified in weakness, yet He lives by the power of God. For we also are weak in Him, but we shall live with Him by the power of God toward you. Examine yourselves, as to whether you are in the faith. Test yourselves. Do you not know yourselves, that Jesus Christ is in you? ---unless indeed you are disqualified. But I trust that you will know that we are not disqualified. Now I pray to God that you do no evil, not that we should appear approved, but that you should do what is honorable, though we may seem disqualified. For we can do nothing against, but for the truth. For we are glad when we are weak and you are strong. And this also we pray, that you may be made complete.'

(2 Corinthians 13:4-9)

'And lest I should be exalted above measure by the abundance of the revelations, a thorn in the flesh was given to me, a messenger of Satan to buffet me, lest I be exalted above measure. Concerning this thing I pleaded with the Lord three times that it might depart from me. And He said to me, "My grace is sufficient for you, for My strength is made perfect in weakness." '

(2 Corinthians 2:7-9)

We will need to receive the power that the Holy Spirit brings upon: for in order to be witnesses to Him, we need the strength to resist the temptation to rejoice only in His mercy and forgiveness, but ultimately His grace, His testimony. We need strength to become weak in Him, to persevere, for 'His strength is made perfect' there.