Knowing what matter of men were among You….for your sake.
Know your Elect? They(144,000) will.
1 Thessalonians 1:4-5 KJVS
Knowing, brethren beloved, your election of God.  For our gospel came not unto you in word only, but also in power, and in the Holy Ghost, and in much assurance; as ye know what manner of men we were among you for your sake.
Gospel came to the 144,000
Through the very Elect.
Mark 13:9-11 KJVS
But take heed to yourselves: for they shall deliver you up to councils; and in the synagogues ye shall be beaten: and ye shall be brought before rulers and kings for my sake, for a testimony against them.  And the gospel must first be published among all nations.  But when they shall lead you , and deliver you up, take no thought beforehand what ye shall speak, neither do ye premeditate: but whatsoever shall be given you in that hour, that speak ye: for it is not ye that speak, but the Holy Ghost.
The very Elect have been among the 144,000 for their sake.
Revelation 7:3-4 KJVS
Saying, Hurt not the earth, neither the sea, nor the trees, till we have sealed the servants of our God in their foreheads.  And I heard the number of them which were sealed: and there were sealed an hundred and forty and four thousand of all the tribes of the children of Israel.
They(144,000) well be holpen with a little help.
Daniel 11:33-34 KJVS
And they that understand among the people shall instruct many: yet they shall fall by the sword, and by flame, by captivity, and by spoil, many days.  Now when they shall fall, they shall be holpen with a little help: but many shall cleave to them with flatteries.
Then the 144,000 will know who their Elect(very Elect)brothers and sisters are, after The Holy Spirit speaks through the Very Elect at 666.
Revelation 6:9-11 KJVS
And when he had opened the fifth seal, I saw under the altar the souls of them that were slain for the word of God, and for the testimony which they held:  And they cried with a loud voice, saying, How long, O Lord, holy and true, dost thou not judge and avenge our blood on them that dwell on the earth?  And white robes were given unto every one of them; and it was said unto them, that they should rest yet for a little season, until their fellowservants also and their brethren, that should be killed as they were , should be fulfilled.
Souls under the altar In Heaven = 7000 elect that have already passed.
They will rest for a little season= 666.
Until their fellow servents= 232 very Elect (during 666)
Brethren = 144,000
Fulfill their device during 666.
Knowing, brethern(144,000) Your Election (very Elect)
were among you for your sakes.
To be continued.