What verses did it say support universalism? Can you cite them?
You are right that the article itself just mentions it as a consequence of support mentioned for the first two propositions. But here are a few I thought of / found with a quick search (there are others). Again, I realize people harmonize these with the hell texts to have God not reconcile all. I just don’t see why that is any better than harmonizing the hell texts with these texts to have God reconcile all. All are YLT:
Psalms 86:9 - All nations that Thou hast made Come and bow themselves before Thee, O Lord, And give honour to Thy name.
Isaiah 2:2 - And it hath come to pass, In the latter end of the days, Established is the mount of Jehovah's house, Above the top of the mounts, And it hath been lifted up above the heights, And flowed unto it have all the nations.
Isaiah 45:22-23 - Turn to Me, and be saved, all ends of the earth, For I [am] God, and there is none else. By Myself I have sworn, Gone out from my mouth in righteousness hath a word, And it turneth not back, That to Me, bow doth every knee, every tongue swear.
Isaiah 66:23 - And it hath been from month to month, And from sabbath to sabbath, Come do all flesh to bow themselves before Me, Said Jehovah.
John 12:32 - and I, if I may be lifted up from the earth, will draw all men unto myself.
Romans 5:18 - So, then, as through one offence to all men [it is] to condemnation, so also through one declaration of `Righteous' [it is] to all men to justification of life;
Romans 11:32 - for God did shut up together the whole to unbelief, that to the whole He might do kindness.
1 Corinthians 15:22 - for even as in Adam all die, so also in the Christ all shall be made alive,
Ephesians 1:10 - in regard to the dispensation of the fulness of the times, to bring into one the whole in the Christ, both the things in the heavens, and the things upon the earth -- in him;
Colossians 1:20 - and through him to reconcile the all things to himself -- having made peace through the blood of his cross -- through him, whether the things upon the earth, whether the things in the heavens.
1 Timothy 4:10 - for this we both labour and are reproached, because we hope on the living God, who is Saviour of all men -- especially of those believing.
Titus 2:11 - For the saving grace of God was manifested to all men,
1 John 2:2 - and he -- he is a propitiation for our sins, and not for ours only, but also for the whole world,
Revelation 21:5 - And He who is sitting upon the throne said, `Lo, new I make all things; and He saith to me, `Write, because these words are true and stedfast;'