A supporter of same-sex marriage wears a rainbow flag in front of the U.S. Supreme Court. A supporter of same-sex marriage wears a rainbow flag in front of the U.S. Supreme Court on Tuesday (Andrew Harrer / Bloomberg)

Without question, last week was a great moment in gay history. The Supreme Court heard arguments in two cases that speak to the civil rights of same-sex couples. But this week wasn’t bad, either.

In a near-daily parade, six senators expressed public support for marriage equality. On Monday, Sen. Bob Casey (D-Pa.) said yes. Tuesday was a double-header, with Sens. Tom Carper (D-Del.) and Mark Kirk (R-Ill.). Wednesday must have been soul-searching day because on Thursday, Sen. Bill Nelson (D-Fla.) came out for same-sex marriage. And today, Sens. Joe Donnelly (D-Ind.) and Heidi Heitkamp (D-N.D.), both elected in 2012, said “I do” to gay nups. Sen. Rob Portman (R-Ohio) got the ball rolling with his stunning announcement of support last month.

For the first time, a majority of the U.S. Senate supports marriage equality. To be specific, there are now 53 senators, including two Republicans, standing up for the dignity of same-sex couples and their families and who favor ensuring that equal protection under the law applies to them. They hail from red states and blue states. They are newly elected, reelected or up for reelection in 2014.

Equality for lesbian, gay, bisexual and transgender (LGBT) Americans is inevitable. And Carper, Casey, Donnelly, Heitkamp, Kirk and Nelson should be hailed for hastening the process.

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Jonathan Capehart is a member of the Post editorial board and writes about politics and social issues for the PostPartisan blog.