They exchanged the truth about God for a lie, and worshiped and served created things rather than the Creator... Romans 1:25 NIV
"Sun worship is still practiced today, not only in traditional Sunday-keeping churches but also in neo pagan rituals.
Sunday was not merely one of the many pagan customs in the times of
ancient Israel; it was an antichristian practice for the early church.
In a very special sense, Sunday was a mark or symbol of apostasy.
The summer solstice is an astronomical event that occurs each year and
marks the longest day of the year. It refers to the sun’s position in
the sky as it reaches its highest point.
The sun was revered by ancient
pagans as the supreme deity and the source of all life. Festivals, food,
dance, prayers, music, and rituals were used to honor the sun. This is
the origin of Sunday worship.
The Roman solar deity Sol Invictus, also
known as the “Unconquered Sun,” was revered in the Roman Empire. The
cult of Sol Invictus emerged as part of the religious life of the Roman
Catholic Church when the sanctity of Saturday was transferred to Sunday
as the new day of worship.
On June 20, 2023, the Associated Press reported that 8,000 people 
had
gathered to worship the sun on this year’s summer solstice. We read the
following from the report:
“All hail the rising sun. Around 8,000 revelers gathered around a prehistoric stone circle on a plain in southern England to express their devotion to the sun,
or to have some communal fun. Druids, pagans, hippies, local residents
and tourists, many clad in an array of colorful costumes and even
antlers, stayed and celebrated at Stonehenge for the night and greeted sunrise on Wednesday, which is the longest day in the Northern Hemisphere.”
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