 Orthodox Judaism and orthodox Sunni Islam hold that for all practical purposes veneration should be considered the same as prayer; Orthodox Judaism (arguably with the exception of some Chasidic practices), orthodox Sunni Islam, and most kinds of Protestantism forbid veneration of saints or of angels, classifying these actions as akin to idolatry.Similarly, Jehovah's Witnesses assert that many actions classified as patriotic by Protestant groups, such as saluting a flag, count as equivalent to worship and are therefore considered idolatrous as well.Worship in Hinduism involves invoking higher forces to assist in spiritual and material progress and is simultaneously both a science and an art.