https://www.tentmaker.org/articles/universalism-is-not-in-the-bible.htm
I got this from the above weblink:
Luke 3:6: "All flesh shall see the salvation of God." This verse is probably taken from Isaiah 40:5, which says, "And the glory of the Lord shall be revealed, and all flesh shall see it together, for the mouth of the Lord has spoken." Surely these verses point in the direction of universal salvation. Matthew 5:8: "Blessed are the pure in heart, for they shall see God."
Great verses.
Titus 1:15,16 - related to Matthew 5:8