Does God Command Christians to observe Passover?

No. The command was given to the children of Israel. "Speak ye unto all the congregation of Israel..." (v. 3).

Further, the author of the article sets up a false dichotomy, asking whether Christians should celebrate Easter or Passover, then defines Easter as the pagan holiday that celebrates Ishtar, bunnies, and colored eyes to further try to strengthen his point.

The book of Hebrews should settle these issues of keeping the law, feasts, and so forth. Christ the mediator of the new testament could not even be "an high priest of good things to come, by a greater and more perfect tabernacle" if we are still functioning under the old covenant. Jesus was made a surety of a better testament with better sacrifices. He is the mediator of a better covenant, which was established upon better promises.

 

Purge out therefore the old leaven, that ye may be a new lump, as ye are unleavened. For even Christ our passover is sacrificed for us: Therefore let us keep the feast, not with old leaven, neither with the leaven of malice and wickedness; but with the unleavened bread of sincerity and truth. 1 Cor 5:7,8

Even though I do not believe the Passover there is the feast spoken of, without Christ having been the Passover there would be no feast to keep.

If all would notice all the days of holy convocation the LORD appointed, followed the Passover, other than the seventh day Sabbath. Is there a reason for that to be so? The reality of all the feasts, have and will take place, because Christ our Passover was sacrificed for us.

I believe the Passover is kept through the Lord's Supper. Ye do show the Lord's death. til he come.

 

As of 70 A.D. it can no longer be keep. No Temple.

 

As a point of order, since my cult alarm just went off:

I would be wary of any website that, in addition to requiring observance of the passover (typical of Armstrongers), is also annihilationist (Armstrong, JW, SDA) and considers Cain to be the literal child of Satan (see the website).

Just saying...