This aspect of “blessed” means to be happy, which is an attitude of enjoyment and pleasure resulting from a sense of well-being and contentment.
When Jesus is speaking to the Jews concerning His Kingdom and the tribulation period that is about to come, He states several things in the Sermon on the Mount that they will go through, yet they can be happy because the kingdom of the heavens belongs to them.
Happy are the poor in spirit because the kingdom of the heavens is concerning them, Matthew 5:3.
These ones are happy because they lack in spirit, which is referring to their lack of understanding concerning what the man of lawlessness is doing in Jerusalem as he desecrates the temple of God (Daniel 9:27). Jesus goes on to encourage those who mourn, have an objective mind, hunger and thirst after righteousness, have a pure heart, are peacemakers, and are persecuted and reviled for righteousness, because even though they will go through these things they will all be happy since when Christ returns, He will rescue the Jews in the wilderness and will setup His kingdom in which the nation of Israel will serve as priests to the Gentile nations while living in a land of peace where righteousness rules.
When it comes to the Christians:
Our happy hope is the appearance of our great God even Savior Jesus Christ (Titus 2:13). This happy hope is the rapture, the day when Christ returns to take His Church home (1 Thessalonians 4:16). In this day we will be like Him (1 John 3:2) and will forever be with Him (1 Thessalonians 4:17).
Do we have faith? Remember, faith is based upon accomplished deeds that God has done through which we have promises, not a made-up belief based upon what we want or wish for (Hebrews 11:1). How we serve God is important. Some believe what they eat and drink matters, where others do not. If we truly are taking God at His Word, then happy is the one who is not judging himself in what he does, (Romans 14:22), for he will eat and drink with a good conscience.
Although Thomas saw Christ after His resurrection and then believed, those who do not see Christ and believe will be even happier (John 20:29).
As a result of Christ’s resurrection, by which we are proven to be righteous before God in Christ, our lawless works have been sent away (forgiven). This brings happiness, for happy is the one whose lawlessness is forgiven and to whom the Lord does not impute his sin (Romans 4:7-8).
We can even be happy when we face temptations, which is a solicitation to do something that lacks in character, by overcoming, not through our own effort, but by taking God at His Word and using the defenses He has provided for us in Christ (James 1:12).
Even when we suffer for doing what is right and others spread lies about us because we refuse to associate with their wrong actions, we can be happy for it is a thing of grace to even be reproached for Christ, (1 Peter 3:14; 4:14).
Those who stop living by law and start living by the law of liberty, the law of the Spirit that sets us free (Romans 8:2), are happy as a result of being doers, not just those who only listen (James 1:25).
God is a happy God (1 Timothy 1:11) and has given to us all things pertaining to life and godliness so that we can also be happy. Therefore, our happiness is a result of how we use what God has provided for us so that in any situation we face we can be happy, because we belong to Him.