The article below will explain this subject:
Title: Did Jesus Observe Lent?
Author: Herman L Hoeh
Publication: The Plain Truth
Publisher: Worldwide Church of God
Founder: Herbert W Armstrong
Editor-in-Chief: Herbert W Armstrong
Issue: Feb 1982
Number: Vol 47, No 2
Page: 21
Keywords: Lent, spring
Source: The Plain Truth Magazine -- Feb 1982
Type: Article
Type Media: PDF
Article:
https://cog-hwa.org/pub/pt/1982/PT-1982-02_HLH_Did_Jesus_Observe_Lent.pdf
Entire Issue:
https://cog-hwa.org/pub/pt/1982/PT-1982-02.pdf
Other related material:
Title: The Plain Truth About Easter
Author: Herbert W Armstrong
Date: 1957, 1973
Type: Booklet
Type Media: PDF
https://cog-hwa.org/pub/bb/easter.pdf
Title: The Resurrection Was Not on Sunday
Author: Herbert W Armstrong
Date: 1952, 1971, 1972
Type: Booklet
Type Media: PDF
https://cog-hwa.org/pub/bb/resurrection.pdf
Title: How Often Should We Partake of the Lord's Supper?
Author: Herbert W Armstrong
Date: 1952, 1974
Type: Booklet
Type Media: PDF
https://cog-hwa.org/pub/bb/supper.pdf
Title: Which Day is the Christian Sabbath?
Author: Herbert W Armstrong
Date: 1962, 1964, 1968, 1970, 1971, 1972, 1976
Type: Booklet
Type Media: PDF
https://cog-hwa.org/pub/bb/sabbath.pdf
Title: Which Day is the Sabbath of the New Testament?
Author: Herbert W Armstrong
Date: 1952, 1971
Type: Booklet
Type Media: PDF
https://cog-hwa.org/pub/bb/testament.pdf
Title: Mystery of the Ages
Author: Herbert W Armstrong
Date Published: 1985
Type: Book
Type Media: PDF
https://cog-hwa.org/pub/bb/mystery.pdf
Title: The United States and Britain in Prophecy
Author: Herbert W Armstrong
Date Published: 1980
Type: Book
Type Media: PDF
https://cog-hwa.org/pub/bb/britain.pdf
Title: The Wonderful World Tomorrow -- What It Will Be Like
Author: Herbert W Armstrong
Date: 1966, 1973, 1979
Type: Book
Type Media: PDF
https://cog-hwa.org/pub/bb/tomorrow.pdf